18 - The Urinary System Flashcards
The tubule opening of the nephron where water and solutes empty from the bloodstream
Bowman capsule
A small vessel that conveys blood to the glomerulus
Afferent arteriole
Inlet on the renal pelvis where urine is collected from the renal pyramids
Calyx
Twisted segments of the nephrons on either side of the loop of Henle. The proximal convoluted tubule is the first segment of the nephron; the distal convoluted tubule is the last segment of the nephron.
Convoluted tubule
A small vessel that conveys blood away from the glomerulus
Efferent arteriole
A measurement of the kidney’s ability to filter and and remove waste products from the blood
Glomerular filtration rate
A network of capillaries inside the Bowman capsule involved in filtering blood
Glomerulus
The curved area of the kidney where the renal artery, renal vein, and ureters enter or leave the kidney
Hilus
One of the two large, bean-shaped organs that are the main filters of blood
Kidney
The U-shaped part of a nephron
The Loop of Henle
Urination
Micturiton
The small filtering unit in the kidney made up of blood vessels and tubules; it is the working unit of the kidney.
Nephron
A projection that has small openings through which urine drains out of the nephron
Papilla
A vessel arising from the efferent arteriole that runs alongside and around the renal tubules and drains into the renal venous system
Peritubular capillary
Fibrous connective tissue surrounding the kidneys
Renal capsule
The center of the kidney, where the renal pyramids are located
Renal medulla
The extension of the ureters inside the kidney that collects urine from the calyces and sends it down the ureters
Renal pelvis
A triangular area in the kidney that contains nephrons
Renal pyramid
One of two tubes that transport urine from the kidneys to the urinary bladder
Ureter
The tube that transports urine from the urinary bladder to the outside of the body
Urethra
The sac that holds urine before it is expelled from the body; urination occurs when the bladder contracts.
Urinary bladder
The liquid waste excreted from the kidneys
Urine
A sudden decline of renal function
Acute renal failure
An excess amount of nitrogenous waste products in the blood
Azotemia